Mechanical Behaviour of Materials (Part – I)

By Prof. Shashank Shekhar, Prof. Sudhanshu Shekhar Singh | IIT Kanpur

Learners enrolled: 813

About the Course:

This course has a vast syllabus and hence it has been partitioned into two sections. At the end of both the sections of the course, students should be well conversant with theory of plasticity, theory of dislocations and its relation to various mechanical properties exhibited by various materials, viz. strength, fracture, fatigue and creep

INTENDED AUDIENCE : Undergraduate Students and first year graduate students of following discipline: Materials Engineering, Mechanical Engineering, Metallurgical Engineering, Aerospace Engineering

PREREQUISITES : A course related to nature and properties of materials

INDUSTRY SUPPORT : Manufacturing Companies, Automobile companies

Summary

Course Status :	Completed
Course Type :	Core
Duration :	12 weeks
Category :	Metallurgy and Material science & Mining Engineering Materials Joining Electronic Materials Materials Characterization Minor in Metallurgy
Credit Points :	3
Level :	Undergraduate
Start Date :	23 Jan 2023
End Date :	14 Apr 2023
Enrollment Ends :	06 Feb 2023
Exam Registration Ends :	17 Mar 2023
Exam Date :	29 Apr 2023 IST

Note: This exam date is subjected to change based on seat availability. You can check final exam date on your hall ticket.

Page Visits

Course layout

Week 1: Introduction, Origin of elasticity, Stress as a tensor, Transformation of stress, Principal stresses,

Week 2: Mohr's circle, Stress-strain relationships in isotropic and anisotropic materials

Week 3: Viscoelasticity, Tensile testing, Universal testing machines

Week 4: Flow stress, Yield criterion: Tresca, von-Mises, Effective stress, Effective strain

Week 5: Plastic instability, Effect of strain Rate and temperature, Dislocations: discovery and fundamentals

Week 6: Dislocations: characteristics, stress and strain fields of dislocations, Energy of dislocations, Dislocation motion: glide

Week 7: Dislocation motion: Cross-slip and climb, steps in dislocations, slip systems, More on slip systems

Week 8: Critical resolved shear stress, Dislocation interactions, Image forces, Partial dislocations

Week 9: Strengthening mechanisms: Precipitation strengthening: basic Criteria, precipitate characteristics, mechanisms, effect of temperature; Dispersion Strengthening

Week 10: Solid solution strengthening: Interaction with dislocations, Yield point phenomenon; Grain boundary strengthening

Week 11: Strain hardening: Single crystal and poly crystal deformation, Taylor hardening, Dislocation multiplication, Intersection and locks, Summary of strengthening mechanisms

Week 12: Hardness testing, Impact testing, Mechanical behavior of composites

Books and references

1.Mechanical Behaviour of Materials, M. A. Meyers and K. K. Chawla

2.Mechanical Metallurgy, G.W. Dieter

3.Mechanical Behavior of Materials, William F. Hosford

4.Introduction to Dislocations, D. Hull and D.J. Bacon

5.Deformation Behaviour and Fracture Mechanics of Engineering Materials, R. W. Hertzberg

6.Mechanical Behaviour of Materials, Courtney

Instructor bio

Prof. Shashank Shekhar

IIT Kanpur

Prof. Shashank Shekhar is an Associate Professor at IIT Kanpur. He joined IITK in 2010 and has since taught manufacturing related courses to 2nd year, 3rd year as well as 4th year UG students. His research interest lies in thermomechanical processing, particularly severe plastic deformation using techniques like machining and constrained groove pressing.

Prof. Sudhanshu Shekhar Singh

Prof. Sudhanshu Shekhar Singh is an Associate Professor at IIT Kanpur. He joined IITK in December, 2015. He has taught courses related to manufacturing and mechanical behavior of materials to UG/PG students. His research interests are deformation behavior of materials at both large and small length scales, Laser processing of materials and Corrosion.

Course certificate

The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.
The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).
Date and Time of Exams: 29 April 2023 Morning session 9am to 12 noon; Afternoon Session 2pm to 5pm.
Registration url: Announcements will be made when the registration form is open for registrations.
The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published. If there are any changes, it will be mentioned then.
Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.

CRITERIA TO GET A CERTIFICATE

Average assignment score = 25% of average of best 8 assignments out of the total 12 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and IIT Kanpur. It will be e-verifiable at nptel.ac.in/noc.

Only the e-certificate will be made available. Hard copies will not be dispatched.

Once again, thanks for your interest in our online courses and certification. Happy learning.

- NPTEL team